Cepstral Voices and PLS Access

Greetings
How do I get a Cepstral Voice to access a Pronunciation Lexicon Specification (PLS) Dictionary.
Percy
RC Phoneme Dictionary
http://ReadTAClearly.com
How do I get a Cepstral Voice to access a Pronunciation Lexicon Specification (PLS) Dictionary.

RC Phoneme Dictionary
http://ReadTAClearly.com